www.makarov.com has them for your IJ70-17a or 18a .
Non adjustable blade sight.
You can find the TruGlo sight at Bass Pro Shops. Bought it last year for my Baikal izh 27em-1c. Good Luck.
IF IN FACTORY CONFIGURATION, The front sight is fixed and not adjustable. The rear sight is drift adjustable for windage changes - you need to loosen the set screw that holds the rear sight in place. From what I've found, it may take some doing to get that set screw loosened.
Not designed to be adjustable.
The red dot tube is a type of sight or scope with adjustable magnification.
slide assembly...pretty sure
For MANY firearms (but not all) the sights may be adjustable by the user. However, in the case of a shotgun with bead sights, or a revolver with fixed sights, they are not adjustable. Some semi=auto pistols have sights that can be adjusted by a gunsmith. Most rifles will have a user-adjustable sight.
Midway USA
for damage to the ignition sight tube
Possible it was a special order, but, most likely aftermarket.
You can get a laser that clips on to the trigger guard. They are about $100 dollars for a small one. They have a button that you push, that is on the unit, on these modles, but they make some with the button that sticks onto the grip
If the sights are fixed, they can't be adjusted. You would either need to replace them with adjustable sights, or else use the "Kentucky windage" method of compensation.